Roller supporting device of stepping type multi-station centerless roller cylindrical grinding machine

The invention belongs to the technical field of roller grinding, and particularly discloses a stepping type multi-station centerless roller cylindrical grinding machine roller supporting device which comprises a roller supporting device body, a roller servo jacking device and a roller air cylinder jacking device, the roller supporting device body comprises a supporting plate, a roller jacking plate and a driving mechanism, and a roller can be placed on the top of the supporting plate; roller jacking plates parallel to the supporting plate are arranged on the front portion and the rear portion of the upper portion of the supporting plate correspondingly, the roller jacking plates are movably connected with the supporting plate, and under the action of a driving mechanism, the roller jacking plates can vertically move upwards relative to the supporting plate to jack rollers or vertically move downwards to be away from the rollers. The ejection head and the air cylinder extension rod ejection head can horizontally move left and right to approach and eject the roller or be far away from the roller, so that the roller is prevented from jumping during machining, the coaxiality of the roller after arc opening and fine grinding is improved, the quality of finished products is improved, and the machining precision is improved.